smokeloader | 0a995df69165131d1a7a2c734f8f1b221338b2f9754ee1863cb8fd7fbdd296f7

Analysis

max time kernel
22s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
15-01-2024 05:33

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General

Target

toolspub2(1).exe
Size

204KB
MD5

42fd43493fe458c14357e791d574da30
SHA1

cc8add3c129d5a6ea818ff818e6dcf83dbb61691
SHA256

0a995df69165131d1a7a2c734f8f1b221338b2f9754ee1863cb8fd7fbdd296f7
SHA512

49aed3b2bb525f285928d0aecde5d4189356c1374a5ab525e63442da6fe321c278b06216a0a739357bba6028f087d77070cb4d06765ac34c9def6fc2d7a8c706
SSDEEP

3072:ZkIknM3Jq/AmlEkJiAj1K/2sIMOfbAichhFye+Uv3+RLzT+cmk:ZkIyXlEdOfEich3yIAzCcL

Score

10^/10

smokeloader up3 backdoor evasion trojan

Malware Config

Extracted

Family

smokeloader

Botnet

up3

Extracted

Family

smokeloader

Version

2020

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32

Signatures

SmokeLoader
Modular backdoor trojan in use since 2014.
trojan backdoor smokeloader
Deletes itself 1 IoCs

Processes:

pid process

3408
Executes dropped EXE 1 IoCs

Processes:

93D4.exe

pid process

4084 93D4.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

93D4.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 93D4.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

93D4.exe

pid process

4084 93D4.exe
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

4548 4040 WerFault.exe toolspub2(1).exe
4992 2396 WerFault.exe explorer.exe

pid	process
3408

pid	process
4084	93D4.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	93D4.exe

pid	process
4084	93D4.exe

pid	pid_target	process	target process
4548	4040	WerFault.exe	toolspub2(1).exe
4992	2396	WerFault.exe	explorer.exe

NSIS installer 8 IoCs

installer

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_1
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_1
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_1
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\98B7.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\98B7.exe	nsis_installer_2

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

toolspub2(1).exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	toolspub2(1).exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	toolspub2(1).exe
Key enumerated	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI	toolspub2(1).exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

93D4.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	93D4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	93D4.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

toolspub2(1).exe

pid	process
4040	toolspub2(1).exe
4040	toolspub2(1).exe
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
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3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
3408
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3408
3408
3408
3408
3408
3408
3408
3408
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3408
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3408
3408
3408
3408
3408

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

toolspub2(1).exe

pid process

4040 toolspub2(1).exe

Suspicious use of AdjustPrivilegeToken 16 IoCs

Processes:

93D4.exe

description	pid	process
Token: SeShutdownPrivilege	3408
Token: SeCreatePagefilePrivilege	3408
Token: SeDebugPrivilege	4084	93D4.exe
Token: SeRestorePrivilege	4084	93D4.exe
Token: SeBackupPrivilege	4084	93D4.exe
Token: SeLoadDriverPrivilege	4084	93D4.exe
Token: SeCreatePagefilePrivilege	4084	93D4.exe
Token: SeShutdownPrivilege	4084	93D4.exe
Token: SeTakeOwnershipPrivilege	4084	93D4.exe
Token: SeChangeNotifyPrivilege	4084	93D4.exe
Token: SeCreateTokenPrivilege	4084	93D4.exe
Token: SeMachineAccountPrivilege	4084	93D4.exe
Token: SeSecurityPrivilege	4084	93D4.exe
Token: SeAssignPrimaryTokenPrivilege	4084	93D4.exe
Token: SeCreateGlobalPrivilege	4084	93D4.exe
Token: 33	4084	93D4.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

description	pid	target process
PID 3408 wrote to memory of 4084	3408	93D4.exe
PID 3408 wrote to memory of 4084	3408	93D4.exe
PID 3408 wrote to memory of 4084	3408	93D4.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\toolspub2(1).exe
"C:\Users\Admin\AppData\Local\Temp\toolspub2(1).exe"
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:4040
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 368
  2⤵
  - Program crash
  PID:4548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4040 -ip 4040
1⤵
PID:1476

C:\Users\Admin\AppData\Local\Temp\93D4.exe
C:\Users\Admin\AppData\Local\Temp\93D4.exe
1⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:4084
- C:\Windows\SysWOW64\explorer.exe
  C:\Windows\SysWOW64\explorer.exe
  2⤵
  PID:2396
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2396 -s 1140
    3⤵
    - Program crash
    PID:4992

C:\Users\Admin\AppData\Local\Temp\98B7.exe
C:\Users\Admin\AppData\Local\Temp\98B7.exe
1⤵
PID:4340
- C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe
  "C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe"
  2⤵
  PID:4908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 2396 -ip 2396
1⤵
PID:5016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\93D4.exe

Filesize
64KB

MD5
8eaa9843324e8c21c964850a9a0c0f0a

SHA1
9430a23ce885526cab53df84ec74f295d0dbae50

SHA256
2c18da7002d0c0b493e0fc3b2e115ac05f941070cdd9143c6c8d2661140ffdbc

SHA512
80074e5016a4e8ccaec4b39d3bcc6e95ba540ffbdb413d95957ab93dbdc4fbc3991d9fdb60667f6a0d595b37b1ff13de367769de7f639aebf0858689c9ba8194

Download Submit
C:\Users\Admin\AppData\Local\Temp\93D4.exe

Filesize
80KB

MD5
6986d04d6041e1ab0f6056f914ddc45b

SHA1
c13a37f3ea7fbde322365bebc708ea91217adbac

SHA256
bcddd33e150637ae909529cb77bf7dfec3283ec46b70d86900c80a657787521e

SHA512
27b707fcac8312fba4d97048a1c9205d5260af3e7a5d86646baf32ae79970761df7159cafe3d1186d6ad0854db682a480f2bdb7d43a2aaa6296f03443588f00f

Download Submit
C:\Users\Admin\AppData\Local\Temp\98B7.exe

Filesize
146KB

MD5
7d418894895cb6bf3345c3809e86f7d4

SHA1
a3778c15a0d088de8e8afe86a3a676f4e830cfde

SHA256
236ce98d054799da290d5b59bc8be1599fbdb56275ab0924ead74fe4a6e13ac8

SHA512
c1715da074e49db6ed62426c500ad8922c65b460e8fde5408b4cb5ab2de3d3a764cc70dcff779fcd16971639800faf0d0a4174fca279c15d6e256afed1830f48

Download Submit
C:\Users\Admin\AppData\Local\Temp\98B7.exe

Filesize
151KB

MD5
e4a080509d3f5591714999aa0db935d3

SHA1
e630bea5d793b80c90423f30314e5da861601d84

SHA256
99616f7f2d5d0173b5eb206d5fb542ee64ada2eaf56e9b6c824fd667b3fc3d70

SHA512
0f31f24a95df972876d57b2b865ad3ee888af5e3a80f3885c215ac5f828b5ef1ae0ffc05377262ee2c27956d105fad39557ebdd2065049faff85e3de2096cd0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe

Filesize
135KB

MD5
08cec90a3f6e0c0e31460b6339ab75f7

SHA1
00737b9dc9ee201d588995556410f07225b52da9

SHA256
772b5b1fd7776c86bb1ed3fa51099950e4c74de3bf68360c9d90641bcae12577

SHA512
c314fbc8d3706bcbd40f687afaa083abb09ed4b555eb08960cf78b0c179de8ae413e1a2b983b87e6602a4daa40cc56a487e8ddc8c9931b975df2819e8317736b

Download Submit
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe

Filesize
99KB

MD5
359a0339d1be9454f8c9819b25bd7999

SHA1
639df44bff479f08bdd7dc369ad2d2f5670c3e4f

SHA256
74aa4717580aea2d2a2dbde15db4cfd17d55a80907251e57ad7f501f4e211b4d

SHA512
55ff503e0a4bb6d1a4a7ca43e2f5059b8399544d19db3933b0202c13ee5902e73d719853061b308e50fdc8746c1a6e0a780c937110a83936dcbae972212ecf49

Download Submit
C:\Users\Admin\AppData\Local\Temp\WindowsUpdater.exe

Filesize
121KB

MD5
724105511047c758a8b1ae7a79c2ebbf

SHA1
9d3985ea0181ba6c95ccddb79f64e06417bcf852

SHA256
decaa96650e1d66b54692a597cb69a1f3a081865c9ca500ed1fd0ce997d3b4b3

SHA512
12764e89634f8b8d1c08db1ababc9c01bce954d70ae6410c122c5711a100124ae765747ff974e4fbdbcad61067892200ed16c1f1a25f9df174783cc4a53e57d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\lib.dll

Filesize
72KB

MD5
2aaa4f051fad1a241b2350466d5edff5

SHA1
401775131d54ab1423316cc9d1d1d936d20cc3c9

SHA256
1ab5c2df45eb90db9a1e738cc2a188539a23b5b349e90e08c65062af1f536ad1

SHA512
673edb0945080c9fa97e4803a05097419804b0c4d4277ddea42cca0381f9fa1669628984c28bf432784cf18e3f93698f9c7b5fed7174650428bc7c68d5f28214

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsc99DF.tmp\System.dll

Filesize
12KB

MD5
dd87a973e01c5d9f8e0fcc81a0af7c7a

SHA1
c9206ced48d1e5bc648b1d0f54cccc18bf643a14

SHA256
7fb0f8d452fefaac789986b933df050f3d3e4feb8a8d9944ada995f572dcdca1

SHA512
4910b39b1a99622ac8b3c42f173bbe7035ac2f8d40c946468e7db7e2868a2da81ea94da453857f06f39957dd690c7f1ba498936a7aaa0039975e472376f92e8f

Download Submit
memory/2396-28-0x0000000000800000-0x00000000008C4000-memory.dmp

Filesize
784KB

Download
memory/2396-31-0x0000000001050000-0x0000000001051000-memory.dmp

Filesize
4KB

Download
memory/2396-62-0x0000000000B60000-0x0000000000F93000-memory.dmp

Filesize
4.2MB

Download
memory/2396-60-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/2396-59-0x0000000000800000-0x00000000008C4000-memory.dmp

Filesize
784KB

Download
memory/2396-63-0x0000000000800000-0x00000000008C4000-memory.dmp

Filesize
784KB

Download
memory/2396-24-0x0000000000B60000-0x0000000000F94000-memory.dmp

Filesize
4.2MB

Download
memory/2396-26-0x0000000000B60000-0x0000000000F94000-memory.dmp

Filesize
4.2MB

Download
memory/2396-30-0x0000000000800000-0x00000000008C4000-memory.dmp

Filesize
784KB

Download
memory/2396-27-0x0000000000800000-0x00000000008C4000-memory.dmp

Filesize
784KB

Download
memory/3408-4-0x0000000002EF0000-0x0000000002F06000-memory.dmp

Filesize
88KB

Download
memory/4040-3-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4040-2-0x00000000005E0000-0x00000000005E9000-memory.dmp

Filesize
36KB

Download
memory/4040-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/4040-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4084-16-0x00000000022D0000-0x0000000002336000-memory.dmp

Filesize
408KB

Download
memory/4084-18-0x0000000077044000-0x0000000077045000-memory.dmp

Filesize
4KB

Download
memory/4084-14-0x0000000000010000-0x000000000006D000-memory.dmp

Filesize
372KB

Download
memory/4084-19-0x00000000022D0000-0x0000000002336000-memory.dmp

Filesize
408KB

Download
memory/4084-17-0x0000000000730000-0x000000000073D000-memory.dmp

Filesize
52KB

Download
memory/4084-22-0x00000000022D0000-0x0000000002336000-memory.dmp

Filesize
408KB

Download
memory/4084-39-0x00000000022D0000-0x0000000002336000-memory.dmp

Filesize
408KB

Download
memory/4084-23-0x0000000002830000-0x000000000283C000-memory.dmp

Filesize
48KB

Download
memory/4084-21-0x0000000002800000-0x0000000002801000-memory.dmp

Filesize
4KB

Download
memory/4340-38-0x0000000000360000-0x00000000008F6000-memory.dmp

Filesize
5.6MB

Download
memory/4340-46-0x0000000000360000-0x00000000008F6000-memory.dmp

Filesize
5.6MB

Download
memory/4908-58-0x0000000072580000-0x0000000072C97000-memory.dmp

Filesize
7.1MB

Download
memory/4908-64-0x0000000072580000-0x0000000072C97000-memory.dmp

Filesize
7.1MB

Download